package com.lqh.filter;

import com.lqh.utils.JwtUtils;
import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;
@Slf4j
//@WebFilter("/*")
public class LoginFilter implements Filter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String requestURI = request.getRequestURI();
        if(requestURI.contains("/login")){
            log.info("登录请求，放行");
            filterChain.doFilter(servletRequest,servletResponse);
            return;
        }

        String token = request.getHeader("token");
        if(token != null||token.isEmpty()){
            log.info("令牌不存在");
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return;
        }

        try {
            JwtUtils.parseJWT(token);
        }catch (Exception e){
            log.info("令牌解析失败");
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            return;
        }

        log.info("令牌解析成功");
        filterChain.doFilter(servletRequest,servletResponse);
    }
}
